Green High Performance Air Filters are excellent replacement air filters for Corvetteowners who want to upgrade their air intake without changing the entire system. Unlike multi-layer gauze filters which can fray and release fiber particles into your Corvette's engine, Green Performance Air filters use two layers of tightly-interwoven cotton fabric. Because the fabric is so durable, Green Air Filters can be washed and reused over and over, which is why a lifetime guarantee comes with each one. Other air filters use a simple pressure molded injection process to bond the perimeter rubber to the interior components. That method saves manufacturing time, but in the process, a considerable amount of rubber can seep onto the filtering surface. This can restrict airflow as much as 25%. Green Filters go through a precise 4 stepproduction process, whi